Incandescent gas-lamp.



H. BLAU.

INGANDESGENT GAS LAMP.

APYLIOATION FILED AUG. 6, 1908..

Patented July 13, 1909 z m MM ll ERMANN JHIAU, ()F AUGSBURG, GERMANY.

INCANDESGENT GAS-LAMP.

Specification of Letters Patent.

Application filed August 6, 1908.

Patented July 13, 1909.

Serial No. 447,279.

To all whom it may concern:

Be it known that l, Hummus Bmu, citizen of Germany, residing ati'\llt1'8l)lll'f, Bavaria, Germany, have invented certain new and usefullmprm'emcnts in incandescent Gas-.lian'ips; and 1 do hereby declare thefollowing to he a full, clear, and exact description of the invention,such as will enable others skilled in the art to which is appertains tomake and use the smile.

This invention relates to incandescent aslamps and has for its objectthe constl'uel ion of such lamps in a manner that will preventexplosions therein and the other advantages hereinafter pointed out. i i

In the accompanying drawings forming part ol this specification, Figure1 is an clevation of an incandescent gasdamp made in :wcordance withthis invention showing the parts thorool when closed. and in normalposition; Fig. 2 is an elevation of the same amp shmviug the partsthereof when opened to permit ignition of the Bunsen flame.

.la the ease of incamlescent gas lamps of large dimensions, such as areused for lightin; railway carriages, in which the incandescent body ismounted on or in the reflector, the latter being arranged within theouter glass hell cover or shade of the lamp and reuuiivahlo with thesame, it frequently happens that when the lamp is closed after lighting;the Bunsen flame an explosion OCCLIIS which may injure the. mantle orglass shade of the lamp. This explosion is caused by the which collectsin the space inelosed h; the reflector and the outer hell cover wh thegas tap is turned on before letting, down said outer cover with thereflector. After letting down the outer cover with the reflector andthen lighting, the Bunsen flame, the outer bell glass together with thereflector is swung hack into place, and it is then that the mixture ofgas and air contained within said hell cover is ignited and causes anexplosion.

The present ii'rvention prevents such an explosion by the arrangrancntthat the rellcctor is automatieally moved out. of the outer hell coverwhen the latter is lot down and again :uitomatically moved into itsplace when the hell cover is swung hack into position; in this way theint crior of the bell cover is thoroughly ventilated and any gas whichhas collected there is removed.

In the form of construction here illustrated in Figs. l and 2 of thedrawings, the reflector (A) is on the one side hinged to the hell cover(1)) at (B and is held on the other side by a short. chain (l,), whenthe hell cover is let down; normally, however, when the bell cover is inplace, the reflector rests within the mouth of this hell cover, beingsupported in any suitable manner, as by hooks attached to the reflectorand resting upon pins secured to the hell cover, as illustrated at (B011 one side of the reflector, the support therefor, consisting, asshown, of a hook and pin. should, as stated, form a hinge, as at (B Thehook shown on the opposite side of the reflector may rest on a like pin,but does not form a hinge with the pin. The chain (13,) is of suchlength that when the hell cover is let down the reflector will remainsuspended half way between the burner and the outer bell cover (1)). Thelatter is hinged at (E) to the body of the lamp containing the burnerThe chain (B acts to withdraw the re flcotor from the cover, when thecover is let down, and the chain aids in supporting the reflector whilethe cover is down, as shown in Fig. 2. The chain, being flexible orcollapsible, does not interfere with the return of the reflector to itsnormal position, as shown in Fig. 1, when the cover, after being letdown, is swung back into its normal position, carrying the reflectorwith it.

The action of this device is as follows: )Vhen the hell cover (1)),containing the reflcetor (A), is let down, the latter will first takepart in the movement of the former until the Bunsen hurner becomesaccessible, and will then, by means of the chain (13,), be moved out ofsaid bell cover, thereby allowhug the therein collected to escape. Whenthe hell cover is swung back the reflector will again take up its formerposition in the hell cover. In this way a thorough ventilation of theinterior space of the bell cover is'attained, and an explosion thereforebecomes impossible.

What I claim as my invention and desire to secure by Letters Patent, is;

1. In an iucaiulcsceut gas-lamp, the combination of a part provided witha burner, a cover for said part, a reflector, a hinge connecting thereflector with the cover and means for witlulrawinp the reflector fromthe cover during the opening movement of the-cover, substantially asdescribed.

2. in an incaiulcscent gas-lamp, the combinatiim of a. part providedwith a burner,

3. In an incandescent gas-lamp, the combinntion of a, part provided witha burner, a cover for said port, chinge connecting said cover With saidpart, it reflector provided with an incandescent body, a. hingeconnectingthe reflector With the cover and e support connecting thereflector with the part provided with the burner, said support beingflexible and of such length that when the cover is let down thereflector will be moved out of the cover, substantially as described.

4. in an incandescent gas-lamp, the combinntion of a part provided witha burner, a cover for said part, L hinge connecting the cover with saidpart, a reflector carried by said cover and movable therewith, a hingeconnecting the reflector with the cover and a support connecting thereflector with the part provided with the burner, said support beingflexible and of such length that when the cover is let down thereflector Will be moved out of the cover, substantially as described.

5. In an incandescent gas-lemp, the combination of it cover and areflector inelosing a space between them, a hinge connecting thereflector with the cover and to withdrew the reflector from the eoverWhen the cover is Withdrawn from the gas-lamp, substantially asdescribed.

6. In an incandescent gas-lamp, the cornbinetion of a cover and a.reflector inclosing a space between them, hinge upon which. the covercan turn, a hinge'connecting the reflector with the cover and nieenstoWithdraw the reflector from the cover when the cover during its openingmovement is turned upon its hinge, substantially as described.

7. In an incandescent ga s-h m the combination of a part provided wit itburner, a cover and o reflector in dosing a space between them, :1l'iinge upo: which the cover can turn, reflector cert fl 'by the coverand movable therewith, hinge connecting the reflector witli the coverand means to with drew the reflector i'roiin the cover when the coverduring its opening movement is turned upon its hinge, snbstmitially asdescribed.

In testimony whereof I hereunto e-flix my signature in the presence oftwo Witnesses.

HERMAN-N B AU.

Witnesses:

ifdArniLnn it. linens, Lonrs MUELLUR.

